Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

CVE-2017-18269

Published: 18 May 2018

An SSE2-optimized memmove implementation for i386 in sysdeps/i386/i686/multiarch/memcpy-sse2-unaligned.S in the GNU C Library (aka glibc or libc6) 2.21 through 2.27 does not correctly perform the overlapping memory check if the source memory range spans the middle of the address space, resulting in corrupt data being produced by the copy operation. This may disclose information to context-dependent attackers, or result in a denial of service, or, possibly, code execution.

Notes

AuthorNote
sbeattie
introduced in glibc 2.21

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
eglibc
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

trusty Not vulnerable
(pre 2.21)
upstream Needs triage

xenial Does not exist

glibc
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic Not vulnerable
(2.27-3ubuntu1)
cosmic Not vulnerable
(2.28-0ubuntu1)
disco Not vulnerable
(2.28-0ubuntu1)
eoan Not vulnerable
(2.28-0ubuntu1)
focal Not vulnerable
(2.28-0ubuntu1)
trusty Does not exist

upstream
Released (2.28)
xenial
Released (2.23-0ubuntu11.2)
Patches:
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=cd66c0e584c6d692bc8347b5e72723d02b8a8ada (master)
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=55ad82e45c313454de657931898e974a7a036cad (2.27)
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=71d339cb86dc58aa511dd1544dad2c77d075069c (2.26)
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3f949b03473b4ca8b8e69a4e540511dfee39e493 (2.24)

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H